Answers

2014-11-20T21:45:32+05:30
Just pass electricity from a cylinder wrapped with coil....it will behave like an electro - magnet.....
1 1 1
2014-11-21T15:35:38+05:30
FOR MAKE AN MAGNET u have to pass electricity through copper wire which is wrapped around a steel .it behaves like an permanent  magnet.
                                                                                           plz mark it best
1 5 1